As a liberal, I see it as a purely negative doctrine.
I don't "respect" Islam, Christianity or the fans of West Ham FC, and don't see why groups should have "rights".
I think I should not have certain rights. I don't want the right to stop them acting in ways that do no physical harm, and that includes speech and dress.
The state acting in my name has no inherent right to stop people believing any damned fool thing they like. I see the right to be wrong as a basic human right, since once you start only alllowing "reasonable" beliefs, it goes downhill very quickly.
I see a big danger of this , where you only get treated fairly if you're a member of a big gang, which will grow stronger in "protecting" people.
Whatever the rights and wrongs of that prat Strew, Moslems and sympathisers are mounting a vigorous defence of "Islamic" clothing.
But what if you're a member of a small, weak faith ?
What if you simply don't like certain "normal" clothes ? One woman I know, really really hated wearing trousers, not religious, just an aversion.
The state should remain neutral, and scrupulously so. The easiest way if the French/American model where you can sue the government if it gets involved too much, and you suffer.
The problem with "supporting all faiths", in a democracy is that the smaller ones get shafted, or as we see so often political correctness means that the state favours some groups.
We then get into leapfrogging. For instance the old Sunday trading laws gave exemptions to firms where Jews formed a majority of the directors. Moslems might want this as well, not unreasonably, and 7th day adventists would want their cut as well.
But where do you draw the line ?
The Plymoth Bretheren ? The Moonies ? A group that meets in someone's flat ?